AP PSYCHOLOGY

Detailed explanation-1: -The major stimulant drugs are amphetamines and related compounds, methylxanthines (methylated purines), cocaine, and nicotine. Amphetamines achieve their effect by increasing the amount and activity of the neurotransmitter norepinephrine (noradrenaline) within the brain.

Detailed explanation-2: -The stimulants may be divided into three categories based on chemical structure: amphetamine (dextro-amphetamine and levo-amphetamine), methamphetamine and methylphenidate (dextro-methylphenidate and levo-methylphenidate).

Detailed explanation-3: -Categories of psychoactive drugs Stimulants increase the activity of the central nervous system, making the person more alert and aroused. Examples of stimulants are nicotine, caffeine, cocaine, ecstasy and the methamphetamines, speed and ice.